Se — Properties & Data | MatWorld

Se

metal

· JVASP-14915· Se

Selenium is a brittle metalloid element with semiconductor properties, commonly available in elemental form for industrial applications. It is widely used in photovoltaic devices, photocopiers, and glass manufacturing due to its light-sensitive characteristics and ability to improve material properties. Engineers select selenium for its unique combination of electrical conductivity that varies with light exposure, making it essential in imaging technologies and renewable energy applications, while also serving as an additive in alloys and ceramics to enhance corrosion resistance and mechanical performance.

photovoltaic cells and solar devicesxerographic imaging and photocopiersglass and ceramic additivescorrosion-resistant coatingssemiconductor applicationsphotodetectors and optical sensors

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	70.60	GPa	DFT · OptB88vdW
Exfoliation Energy(Eexf)	147.2	meV/atom	DFT · OptB88vdW
Poisson's Ratio(ν)	0.4000	-	DFT · OptB88vdW
Shear Modulus(G)	17.58	GPa	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Density(ρ)	5.717	kg/m³	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.8980	eV	DFT · OptB88vdW
↳	1.709	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	23.44	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	16.96	-	DFT · OptB88vdW
↳	10.50	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.3233	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.5367	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.4269	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00135	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00405	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-131.7	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	284.1	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	29.05	%	DFT · TBmBJ

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	0.1337	eV/atom	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

Regulatory Screening

Environmental

Export Control

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.

Se

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